Kalimullin, I. Shs.; Kach, A.; Montalbán, A.; Puzarenko, V. G.; Faizrahmanov, M. Kh. Jump inversions of algebraic structures and the \({\Sigma}\)-definability. (English. Russian original) Zbl 06979347 Algebra Logic 57, No. 2, 161-165 (2018); translation from Algebra Logika 57, No. 2, 243-249 (2018). MSC: 03C57 03D45 PDF BibTeX XML Cite \textit{I. Shs. Kalimullin} et al., Algebra Logic 57, No. 2, 161--165 (2018; Zbl 06979347); translation from Algebra Logika 57, No. 2, 243--249 (2018) Full Text: DOI
Andrews, U.; Kach, A. M. Computing and dominating the Ryll-Nardzewski function. (English. Russian original) Zbl 1323.03038 Algebra Logic 53, No. 2, 176-183 (2014); translation from Algebra Logika 53, No. 2, 271-281 (2014). MSC: 03C35 03C57 03D45 PDF BibTeX XML Cite \textit{U. Andrews} and \textit{A. M. Kach}, Algebra Logic 53, No. 2, 176--183 (2014; Zbl 1323.03038); translation from Algebra Logika 53, No. 2, 271--281 (2014) Full Text: DOI